Store-service-credit-system apparatus.



C. F. KETTERNG, SToEE SERVICE CREDIT SYSTEM APPAEATES.

APPLIOATION FILED FEB. 17, 1906. 1,198,185. Patented Aug.25,1914

5 SHEETEPSHEBT 1.

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ummm MMT-1m x SMQ buil G. F. KETTERING.

STORE SERVICE CREDIT SYSTEM APPARATUS.

APPLICATION FLED PEB. 17, 1906.

Patented Aug, 25, 1914,

SHBETSvSHEBT 2.

MMAMM VVVVVVVVV C. P. KETTBRING.

STORE SERVICE CREDIT SYSTEM APPARATUS.

- APPLICATION FILED FEB.17, 1906. 1,108,1 85.

Patented Aug. 25, 1914.

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Patented Aug. 25, 1914.

5 SHEETS-SHEET 4.

C. F. KETTERING.

STORE SERVICE CREDIT SYSTEM APPARATUS.

` APPLICATION FILED FEB. 17, 1906. 1,1 O8, 185.

'Ww www C. P. KETTBRING.

STORE SERVICE CREDIT SYSTEM APPARATUS.

' APPLICATION FILED FEB. 17, 1906. 1 ,108,185.

Patented Aug. 25, 1914 5 SHEETS-SHEETS.

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, b* RKK R l Mouw-1J l @wi-tmc ooe UNTED STATES PATENT OFFICE.

- CHARLES F. KETTERING, DAYTON, Oli-IIC), ASSLGNGR, BY MESNE ASSIGNMENTS, T0 THE NATIONAL CASH REGISTER'COMPANY, 0Fv DAYTON, OHIO, CORPORATION OF omo, (INCORPORATED IN 190e.)

STORE-SERVICE-GREDIT'-SYSTEM lAIEPARATUS.

clare the following to be a full, clear, and

exact description.

This invention relates to store service systems, and has oritsniain object to provide mechanisni'for assisting in the authorization of credit sales.

vIn niany commercial houses the problem of compelling sales people to Secure proper authorization before making a sale on credit a very important one. It is obviouslyunsafe in most cases to trust the judgment of the clerk as to whether credit should be allowed, and to compel a message being set to some credit man who isauthorized to allow credit is a lengthy and tedious proceediiig. ln may cases an improvement has been made by using the telephone, over which the credit man is communicated with; but 'eren iii such cases there is nothing to show that the credit man really authorized any particular transaction, and it must depend ultimately upon the word of the clerk. The invention is designed, therefore, to obviate this difficulty by providing a means ttor making a permanent record on a sales slip authorizing'credit. in a particular case, and so aii'aiitfiiicV the devicestliat the means can only be operated by the credit man and not by the clerk. ln particular an electricallyoperated device provided 'to' stamp an inserted sales lslip, and electrical connections to the credit niaii`s desk are also provided with means for controlling aY stamping de vce'ironi that point. In a prior applicalioii.y @arial No. 296,893, Atiled Dec. ll.v i904, and upon which Patent No. 975,5f 3 was issued'November 1.5. 1910, there is shown a device ol this general type, and the present invention is designed as an vimprovement th o reonA With these and incidental objects in view, the iiiifeiitioii consists in certain' novel `leatures of construction und combinations ot vforni of embodiment o't-wliich is hereinafter `to be communicated with.

'speei'fieau'on if teneisintent. Patented A110-, 25, 1914;; Application sied February 17, 190e. serial No. 301,707.

specifically described with reference tothe drawings which accompany .and torni 'part ot this specification.

Of said drawings: Figure 1 is a diagram of the complete system. Fig.- 2 is a diagram of the circuit for calling up the credit man from the clerks station. Fig. 3 is a diagram of the 4talking and signal circuits.'

F ig. 4 isa diagram of the stamping circuits and devices operative therewith, and Fig. 5 is a front elevation of a telephone set furnislied with the stampingdevice and showing' the' stamping;r device in section. l

In this system a telephone is provided for the clerk or cashier-inspector, and a circuit is run to a switch-board at the creditl nians desk.y When credit is to be authorized,` theclerk calls up the credit man in the usual` way by raising the telephone receiver from the hook. This notities the credit man that his attention is desired by a lamp signal, as shown in this particular embodiment. lle then connects his telephone set with that et' the clerkand aetuates a signal at the clorks station tti-indicate that lie is ready The clerk then reads ot the amount of the sale and naine of tlief customer desiring credit` and if suoli vcredit is to be given the credit man then operates a switch controlling the stamp vand causes an impression. to he made on the sales slip authorizing the credit. If, however, the credit vis not to be given the credit iiian can communicate over the telephone with the clerk and give Whatever .instructions are necessary. such as a request that the custoiiier call at the oiiice.

Describing the invention more particularly, andv referring iirst to Fig'. 2, it will be seen that this diagram shows theI calling-up circuit for the clei'ks station. It comprises a telephone set, l f-enerally indicated by the numeral l, from which line wires 2 and 3 run to :i jack 4, and also througl'i the line lamp 5i The clerk` when desirous to call the credit man, reii'ioves the receiver from t-he ,hook in the usual way, and circuit is then made from the generator 6 over the main luie wires indicated in heavy lines, wire 7, relay 8, wire il, relay 10, Wire 11, jack 4, wire 2, telephone set 1, wire wire 12, back to the main line. This ener- 'gizes relays 8 and l0, and circuit thereby closed as follows thi'ou Ah the line lamp: from the generator 6, t rough the negative main line, wlre 12, contacts 14, con

trolled byrelay 10, Wire 15,l lamp 5, jack 4, Wire 11,y land back to the positive line throuoh relays 10 and 8 and wire 7. This, theretore, will cause line lamp 5 to be illuminated, and the credit man will therefore be notified that his attention is desired. A pilot lamp 16 is also connected' to be illuminated when any telephone receiverl is taken from the hoolgand the circuit for this is controlled by relay 8. When this relay is energized, contacts 17 will he closed and a circuit then be made from generator (3, positive main line, wire 13, wire 18, pilot lamp 16, wire 19, contacts 17, wire 12, and nega.- tive main line back to thebattery. This pilot lamp will therefore be lighted when any receiver is taken from the hook, and the particular line lamp 5 allotted to the call line will also be lighted. If desired, a buzzer 20 may be connected in parallel with the pilot lamp 16 for use in case the credit man desires to leave his desk temporarily. This buzzer, as shown, is normally disconnected as contacts 2l are open, but a switch 22 is provided for closing them, and in such case the buzzer will be sounded whenever the pilot lamp 16 is lighted, thus audibly calling attention to the desire for communication.

It will be observed by reference to Fig. 2 that the arrangement of circuits in this figure differs from that used in general telephone work in that the line lamp 5 will not be extinguished-if the telephone receiver is replaced on its hook. ln many modern telephone exchanges lamp signals are used in place of the older annunciator drop and these signals are controlled by relays whose circuit is made by removing the receiver from its hook allowing the same to close a contact. When the receiver is restored, however, the relay is denergized. 'In the system disclosed in the present invention the lamp 5 is, it is true, controlled by relay 10 which closes contacts 14 and makes circuit as previously traced through the lamp, but it will bc seen. that this lamp circuit also passes through the coil of relay l0 and 'thereby retains contacts 14 closed. This rclay is therefore a locking.,r relay and maintains its own circuit closed. To extinguish lamps it is necessar to insert the plug,r in spring jack 4 there )y separating the contacts in said jack. The pilot lamp, is wired in' the saine -manncr and will not be extinguished it the receiver is replaced.

The manner of connecting' up line lamp 5 is an important feature of the invention on. account of the time thereby` saved to the clerk calling up. It was stated that' the receiver may be replaced on the hook without extinguishing'the lamp but it will be evicircuit at contacts License dent that the receiver need not be removed from the hook at all, it being stiflicient in order to cali the credit man simply to raise and lower the hook r1`he line lamp 5 will then he lighted and remain so until the credit man plugs in to answer. This evidently will be economical of time for the clerk as other matters may be attended to until the credity man is ready to give attention and so announces by signaling the clerk as hereinafter described. This is also desirable troni the standpoint ot the customer who is saved thel possible emlmrrassmcnt of having thc clerk directly inquire it credit should be given. With this system the clerk by a momentary action raises the receiver and pays no -Further attention until a call (apparently originating from the other end ol the line) is received when only the naine of the customer and the amount need be rca d olii, no question as to credit being asked, so that to all appearances simply a report ci the transaction has been made over the telephone.

Referring now to Fig. 3 it will be seen that this diagram indicates the condition ot the system after a call has been made and the plug inserted in thc line jack. ,The talkingT circuit in this ligure is shown in tull lines` and includes generator (3, negative main line, Wire 12, Wire 3, telephone sct 1. Wire jack 4. wire 23, contacts 24. Wire telephone set 26, and the wire 27 through coils 4l and 42 back to thc generator. lt will be noted, as is usual in telephone work. that the inscrtionI oi the plug' in the jack has sc'iaratcd coi'ltacts 4, thereby alloivirg thc line and pilot lamp to be cxtine'uislnfd und making,r circuit through thc credit nians tclcplunic set. W'ith the system as sho-wu, it is not necessary that thc clerk sl'iould kcep thc receiver to his or her ear until the credit man answers, as means are provided 'tor sounding an alarrrn as, for example. by a buzzer at the elerks station when the credit man is ready to answer. This means includes the switch 29, which controls contacts 2t aud contacts 30. The switch when in the position shown .in full lines clos-:cs thc talking 24. and when in theI po# sition shown in dotted lines closes thc signal circuit, actuating the buzzer or signal Jil to call thc clcrks attention. dien lswitch Q0 is thrown to the position in dotted lines in this ligure, circuit. will be made including,r generator (i, negative iuain line, wire l2, and wire 3, wire 112, signal device 31, wire 33, dotted line contact ot' line jack 4 to the ring o'tx the plug, wire 35, contacts P30. wire 36 through the circuit breaker 37 and back by wire 38 and positive main line to thc ,gcncrator. This circuit breaker 37 has both a low and a. high resistance winding. and the circuit is normally niade only through the low resistance, the high resistance being' short-circuited by contacts 39 indicated in' dotted lines in this figure. When buzzer 31 is in circuit, its resistance is enough to reduce the quantity of. current flowing over the line to too lowan amount to operate the armature of circuit breaker' 2&7, which armature when operated opens contacts 39 and 4there-.by throws into circuit the high resista nec oi' the circuit breaker. This device will be more `fully described hereinafter, .as it is of especial use in connection with the stamping circuit. lVith thecircuitsshown on Fig. 3, it is evident that communication may be had over the talking circuit shown in full lines, and if the credit man desires to call lthe clerks attention .when he or she vhas taken the receiver away from his or her ear, it may be do-ne by throwing the switch 29 into the dotted line position, thereby closing-the circuit through buzzer-31. In Fig. j

3 is also shown a device, comprising the condensers 2 8 and 40 and inductances 41 and 42,

' the condensers being bridged in the main line and the inductances being in series therein.

These devices are not essential to a reasonv ably satisfactory working of the system, but

as in this system the current is not 'supplied from a battery, as- 1s usual 1n telephone practice, but from a direct current genera tor,A

they are used to eliminate undesirable ef fects due to the commutation vof the dynamo. As is well known a so called direct current dynamo gives a uni-direction current of.

nearly a constant voltage. There are. however, small variations due to '-the different relationv which the coils of the generator assume with relation to the electro-magnets thereof, so that the real current derived is not of an absolutely constant voltage as is; that from a-storage battery, but oscillates to a small extent between certain minimum and' maximum voltages without ever de-` clining to zero, as would be the case with the alternating machine. This current may therefore be considered as made up of a current of constant voltage, and which has superposed an additional current in the same direction, but varying from zero to a small maximum of voltage. This variable current is harmful in a telephone, inasmuch as it produces variations in magnetism of the receiver' coil, and therefore tends to produce undesirable noises in the receiver. inductances 41 and 42, as may bc seen from tracing ont the circuits on this ligure are in series with the line and have their usual effect of retarding changes of voltage in the current. As is well known, inductance orv retardation coils ol'er a resistance to the passage ot a steady current, determined only by their ohlnic resistance, but to a changing current, and especially to a rapidly changing current,

they offer a very large impedance in comy parison with which their ohmic resistance that for the steady current referred to above these coils offer no impedance, and are also only objectionable because of their ohmic resistance; while as to the varying current, they will almost entirely prevent its passage. The condensers 28 and 4() are bridged across the line and assist in the function above described in connection with the inductanees A4l and 42. lt'is well known that a condenser offers a very large resistance to the passage of a direct current, but only a very slight impedance to the passage of a pulsat ing or y.alternating current. It is evident, therefore, that the variations in current above described will be furnished a short and electrically easy path back -to the generator by passing through the condensers, whereas the constant current will find it almostl iin- -possible to pass through the eondensers, and will be compelled to pass over the line including the telephone sets. These inductances 41 and 42 and condensers 28 and 40 therefore furnish means for eliminating noises in the talking circuit due to the eoxn mutation of the dynamo.

In Fig. 4 is shown the stamping circuit of the device. been established between the credit man and the clerk, and the credit man is satisfied to allow ereditin the particular case, he moves the switch shown in this figure and thereby operates the stamp indicated diagrannnatically at 4*. This provides a warrant for the clerkto allow a credit, as the stamp y marks such matter as Charge and the date on the slip inserted in the stamp. Referring more particularly to this figure, it will be seen that when the plug is inserted in the line jack, that the sleeve of the plug is in contact with one of the springs in the contact. A relay 44, as shown in this figure, controls a flash Alamp 45 Jfor indicating whether the sales slip has been inserted in the stamp. The circuit for this relay does not include the generator 6, but does pass through a battery 46- of low voltage. The circuit will be made from thisv battery over wire 47, through relay 44, wire 4S, contacts 49 and 50 ot the switch, Wire 5l, sleeve 52 of the plug, spring Contact 53 ot' the jack, wire .'34, through stamp 43 and back over wire 2l und-12 to the negative main line, and buck to the battery 46. This current is oi so low voltage, that if it passes through the stamp coil 43 the resistance of this coil and that of the relay 44 will prevent passage of enough current to close contacts :35, but the stamp coil 43 is normally short-circuitcd at 56, this short-circuiting device beingv displaced when the aper is inserted in the stamp. lf, thereore, no paper is in the stamp and the coil 43 is short-circuited at 56, enough current will then pass over the circuit including battery 4G, through the relay 44, to cause the armature of said After communication hasv circuit to the fact.

relay to close contacts 55, thus making a local circuit through the flash lalnp 45.

.that thel papery has not been placed in the stamp, and he will therefore Anot operate the switch to close the stamp circuit, but Will call the clerks attention over the talking If paper has been inserted in the stamp, the switch shown in Fig. 4 Will be moved so as to break the circuit at contacts 49 and 50 and make the circuit at contact 50 to dotted line contact 59. The stamp circuit, which is mostly shown in dotted lines in this figure, will then be complete and the paper stamped with the desired matter, this circuit running from the generator 6, positive main line, Wire (30, through circuit breaker 37, Wire G1, contact 59, contact 50, Wire 51, sleeve 52, spring 53, wire 54, stamp coil 43, and back over Wires 3 and l2 and the negative main line tothe generator. In the usual operation of the apparatus, this Will stamp the inserted slip and complete the operation, but a device is valso provided so that if the credit man should attempt to operate the stamp While it is short-circuited from no paper having been inserted, an additional signal will be brought into operation to Aserve in conjunction with iiash lamp 45 to announce to the credit man that the sales slip has not been inserted in the stamp. This device .comprises a single stroke bell 65, shown on this figure, and connected in series with the high resistance winding of circuit breaker 37. If an attempt is made to close contacts 50 and 5S) while stamp 43 is short-circuited at 56, a circuit of very low resistance will be made, including short-circuit 5G and the low-resistance winding of circuit breaker 37. This would allow a large amount of current to 'flow over the wire, enough possibly to cause damage to the system, by burning out some part thereof, and means aretherefore provided for throwing into circuit under such conditions the high resistance coil of circuit breaker '37. As indicated on this figure, the normal circuit includes wire 6l leading to the low resistance coil, from which wire 62 `leadsto contacts 39, but in a branch to this circuit is a Wire 63 leading through the high resistance coil of the circuit breaker. then through the signal device 65 and back to the point 64 at which it joins the circuit through the contacts 39. It is evident from this structure that if much current comes over the line through the low resistance winding of circuit-breaker 37, then the armature thereof will be energized, breaking contacts 39 and causing the `current to proceed over the high resistance Linares winding and through the signal device 65. 'lhis both reduces thecurrent to a value such that no damage will be caused to the system, and also announces' to the credit man that no slip has been inserted in the stamping device. lf, on the other hand, a slip has been inserted, thereby breaking the circuit over the wire 5G and compelling the current to traverse the stamp coil, there will then be enough resistance in the line to prevent the armature of circuit breaker 87 from throwing in the high resistance Winding and the alarm device 65, so that this signal Will not then be operated nor, in fact, Will the. flash lamp 45 be lighted,

' for the circuit from battery 46 will then include both the stamp coil 43 and relay coil 44., and will be too small in Value to energize said relay.

The construction of the stamping device which is diagrammatically shown in Fig. '4 may be seen from Fig. 5. In this figure, the type-carryingr members are shown at 67, 68 and G9. The member G7 is permanently fixed Within the ca sing and carries type for printing the Word Charge, or the like. The typecarriers 68 are adjustable dating wheels. rlhe carrier 69 is removable, being dove-tailed into the support 70 and is provided With the clerks number or other identifying device. The platen 71 is mounted upon the iron core 7 Q of the coil 43. `When the current is permitted to pass through the coil 43 the core 72 will tend to center itself within the coil and thus cause an impression to be made upon thevsales slip which has been inserted between the spring switch device 56 and the platen. rl`he energizing oi the coil 43 is dependent upon the operation of the switch 5G tl'n'ough the insertion of a sales slip and the closing ot' a switch at the c1'editn'ums station as has been lfully cxplained.

The circuits of Figs. 2, 3, and 4, which have been described, are all shown on Fig. l, and it is thought that the operation ot the system will be evident from the previous description. To briefly recai'ntulate, however, the operation may be described as follows: The clerk rs't removes the telephone rc ceiver :from the hook, allowing the contact controlled thereby to close circuits for a line lamp and pilot lamp by means of the centacts controlled by the line and pilot relays. The clerk then, if desired, lays the receiver down, or in fact may replace it on the hook, as it is not necessary to listen thercat until called by the operation of the bell. When the credit man is ready to attend,lthe plug is placed in the jack, thereby making the contacts as indicated in dotted lines in AFig. 1. The talking and signal switel'i is then moved in the direction ol the upper arrow in this figure, thereby closing the talking circuit and establishing communication be- 3. il D tween the two telephones. The clerk then shown at the top of the ligure will ring and the circuit breaker will throw in the additional high resistance. It the credit man desires for any reason to communicate with the clerk, the` talking and signaling switch ma)7 be moved in the direction of the lower arrow, when the bell at the clerks station will be rung and attention therefore called. If the credit man desires to leave'his position temporarily, the buzzer switch is thrown in the direction indicated by the arrow, therewith closing the circuit. through the buzzer in parallel with that through tie pilot lamp. The retardation coils and condensers shown in this figure serve to regulate the current from the generator and prevent objectionable noises in the telephone.

lVhile the form of mechanism here shown and described is admirably adapted to'ulfil the objects primarily stated, it is to be understood that it is not intended to'confine the inventionA to the-one Jform of embodiment herein disclosed, for it is susceptible of embodiment in various forms all coming within the scope of the` claims which dol-low.

The-details of the stamp illustrated diagrammatically herein are fully shown in the prior application and are not a part of the presentinvention. As stated in'said prior application the provision of a shunt to the stamp actuating coil and the indicating devices coacting therewith are regarded as important features oit the invention.' It will be evident if no such means was provided that the clerk could procure 4fraudulent Stamping, as byv calling the credit man and stating that in the previous operation the insertion of the paper had been omitted. 'A second operation would thenbe necessary and` this second lslip could be used by the clerk for detrauding the proprietor.

What is claimed is as follows;

l. A store service system having in combination with a ltelephone line lncluding :telephone sets, an electrically controlled stamping device, a circuit for same including a distant switch for operatively controlling the stamping device, and means for indicat-ing by the operation of the switch the absence of an article to be marked.

2. A store service system having in combination with a means of communication, a stamping device, distant means for controlling the operation of said device and means et Said distant controlling means for ndieating the absence of an article to be marked when the controlling means is actuated..

, 3. A store service system having in combination with a telephone line for communication, an electrically controlled stamp, an

y electric circuit and circuit closer for operatively controlling said stamp from a distance', and means at said circuit closer and controlled thereby for audibly-announcing the absence of an article to be stamped when the circuit closer is operated.

4. A store service system having in combination with a means of communication, a stamp, means for controlling the operation of said 'stamp from a distance, means at the said controlling means giving warning of the absence of an article to be marked, 'and means at said controlling means for announcing the said absence when the warning means 1s unheeded and the `controlling means operated.

5. A store service system having in combination with a telephone system, an electrically controlled stamp, aV circuit closer.

distant from the stamp and having connec-c tions for controlling the operation of the latter, a local circuit including a lamp near the circuit closer, a relay for controlling the local circuit, and means regulated by the presence of the article to be marked for rendering the relay inetlective.-

6. A store service system having in combination with a means of communication, a marking device, means` distant from the marking device for controlling the operation of the same, a signal giving warnino' of the absence of an article to be marke and a signal ditinguishable from the first mentioned signal giving notice ot' the said absence when the warning signal is imheeded and the controlling means is operated.

17. In a store service system the combination with a means of communication, of an electrically controlled stamping device having electrical resistance,an electric circuit for controlling the operation of the stamping device, means for normally short circuiting said resistance, and a circuit controller for throwing in additional electrical resistance if circuit is made when the stamping device is short circuited.

8. In a store service system, the combination with a telephone line, of an electrically controlled stamp, means having electrical resistance for controlling the operation of the same, a circuit closer eonnected'in circuit with said means, means normally short circuiting said resistance, acompensating' resistance, and means for throwing. it in circuit if circuit is made when the stamping device is short circuited.

9. In a store service system, the combina tion of a means of communication, et' an electrically' controlled stamping device have' ing electrical resistance, a circuit closer eonnected in circuit with the stamp for controlling the operation of the same, means normally rendering the stamp inoperative, and means for. adding resistance to the circuit when said circuit closer is' operated With the stamp in normal condition.

10. In a store service system, the combinationWith a telephone system, of an electrically controlled stamp adapted to be short circuited and electrical means for controlling the operation of the same including a circuit closer for controlling the electrical means, means for short circuiting the stamp, and means for changing the currents strength when the circuit closer is operated While the stamp is short circuited.

l1. In a store service system, the combination with a telephone line, of an electrically controlled stamp device, means havingl elec trical resistance for controlling the operation of the said device said means including a circuit closer, means for short circuiting said resistance to render said stamp inoperative, and a compensating resistance automatically thrown into circuit if said circuit closer is operated While the stamp resistance is short circuited.

12. In a store service system, the combination with a telephone line, of an electrically controlled stamping device, electrical means for controlling the operation of the stamping device said means including a distant circuit closer, means normally rendering said electrical means inoperative, an indicator local to the circuit closer, a circuit therefor. and a relay for closing said indicator circuit when said electrical means is in inoperative condition.

13. In a store service system, the combina-4 tion with a line for electric transmission, ot an electrically controlled stamp associated therewith, means for short circuiting said stamp, a distant means for controlling said stamp, and a local circuit at the controlling means-closed by the current in the line for transmission when short circuited and including a lamp for indicating that the stamp is-short circuited.

14. In a store service system, the combination With a line for electric transmission, of an electrically controlled stamping device therein having electrical resistance and means for short circuiting same, means Jfor operatively controlling said stamp from a distance and a lamp at the controlling means controlled by the short circuiting of thc rcsistance for indicating that the stamp is short circuited.

15. In a store service system, the combination with a line for electric transmission of an electrically controlled marking device controlled thereby, means normally rendering the device ino erative, a distant circuit controller in sai line, and. a plurality of disi, los, ist

tinguishnble means controlled by the oporutivoness ol the marking device it'or warning that the device is in normal condition.'

l (l. In a store service system, the combination with an electric circuit, of a coil therein having electrical resistance, a stamping deviec operated by said coil, means normally the said preventing means is performing its function.

.18. In a store service system, the combination with a line for electric transmission ot' a stamping` device operated there'trmn` means normally preventing operation of said device` a circuit, controller having a normally short circuited high resistance. and means for adding said high .resistance to the line when attempt is made to operate the stamp While the same is inoperative.

19. In a store service system. the combination with an electrically controlled stamping device normally inoperative but rendered operative by the presence of an article to be stamped. of a circuit for same including a distant switch. and means controlled by the operativcness of the stamping device for indicating by the operation of the switch, the absence of an article to be marked.

20.1K store service svstem having in combination with a telephone line. an electrically controlled stamping device rendered operative. by the presence oit an article to be stamped, means for controlling the operation of said device from a distance and means at said distant controlling means controlled by the operativeness o'lI the stamp ing device for indicating the absence of an article to be marked when the operating means is actuated.

21.. A store service system having in combination with a line for communication, an electrically controlled stamp rendered operative by the presence of an article to be stamped, an electric circuit and circuit closer for controlling the operation of said stamp from a distance, and means at said circuit closer and controlled by the operativeness of the stamp for audibly announcing the absence of an article to be marked When the circuit closer is operated.

22. A store service system having in combination with a line :for communication, a marking;- device rendered operative by the presence of an article to be marked, means for controlling the operation of said device from a distance, a signal giving warning of the absence of an article to be marked, a signal distinguishable from the first mentioned signal giving notice of the said absence when the Warning signal is unheeded and-the means for controlling the marking device from a distance is operated and means controlled in accordance with the operativeness of the marking devicev for operating said signals.

In a store service system the combination with a telephone system, of an electrically controlled stamp and electrical means for controlling the operation' of'the same, means for changing the operativeness of said means, a circuit closer and connections to said electrical means for operating said stamp, and means for changing the current strength when the circuit closer is operated while the operativeness of the operating means is unchanged.

' Q4. In a store service system, the combination with a. means of communication, of an electrically controlled stamping device having means for changing its operativeness, a circuit closer and connections -With the stamping device for controlling the operation of said stamp, and means for otherwise changing the current strength of the circuit when the circuit closer is operated -While the operativeness of the stamping device is unchanged.

25. A store service system, having in lcombination With a telephone line, a stamping device, means at said device for controlling its operation, distant means for causing the operation oi said device, a device adjacent saidv distant means indicating the condition of said controlling means, and a device also adjacent said distant means for giving an indication of the condition of said controlling means when the distant means is operated which is distinguishable from the first mentioned indication.

26. A store service system having in combination with a telephone line, a stamping device, means for operating same, devices adjacent said stamping device forcontrolling the operation thereof, distant means for causing the operation of said stamping device, and means for announcing at said distant means that the controlling device is in normal condition.

27. In a store service system, the combination With a marking device, a distant means for controlling the operation of the saine, and means controlled by the controlling means for indicating the absence or presence of the article to be marked.

28. In a store service system, the combination with an electrically controlled marking device, an electrical means for controlling the operation of the same, and means controlled by the electric controlling means for indicating the absence or presence of the article to be marked.

In testimony whereof I aiiiX my signature in the presence of two Witnesses.

CHARLES F. KETTERING. Witnesses:

CHAs. D. BaoNsoN, J. B. HAYWARD. 

